Thank you for your report! However, processing it in order to get sufficient information for the developers failed (it does not generate a useful symbolic stack trace). This might be caused by some outdated packages which were installed on your system at the time of the report: compiz-plugins-main-default version 1:0.9.7.0~bzr19-0ubuntu6 required, but 1:0.9.7.0~bzr19-0ubuntu7 is available outdated debug symbol package for compiz-plugins-main-default: package version 1:0.9.7.0~bzr19-0ubuntu7 dbgsym version 1:0.9.7.0~bzr19-0ubuntu6 libdecoration0 version 1:0.9.7.0+bzr3035-0ubuntu1 required, but 1:0.9.7.2-0ubuntu1 is available outdated debug symbol package for libdecoration0: package version 1:0.9.7.2-0ubuntu1 dbgsym version 1:0.9.7.0+bzr3035-0ubuntu1 libbamf3-0 version 0.2.112-0ubuntu1 required, but 0.2.114-0ubuntu1 is available outdated debug symbol package for libbamf3-0: package version 0.2.114-0ubuntu1 dbgsym version 0.2.112-0ubuntu1 compiz-gnome version 1:0.9.7.0+bzr3035-0ubuntu1 required, but 1:0.9.7.2-0ubuntu1 is available outdated debug symbol package for compiz-gnome: package version 1:0.9.7.2-0ubuntu1 dbgsym version 1:0.9.7.0+bzr3035-0ubuntu1 compizconfig-backend-gconf version 0.9.5.92-0ubuntu2 required, but 0.9.5.92-0ubuntu3 is available outdated debug symbol package for compizconfig-backend-gconf: package version 0.9.5.92-0ubuntu3 dbgsym version 0.9.5.92-0ubuntu2 bamfdaemon version 0.2.112-0ubuntu1 required, but 0.2.114-0ubuntu1 is available outdated debug symbol package for bamfdaemon: package version 0.2.114-0ubuntu1 dbgsym version 0.2.112-0ubuntu1 compiz-plugins-default version 1:0.9.7.0+bzr3035-0ubuntu1 required, but 1:0.9.7.2-0ubuntu1 is available outdated debug symbol package for compiz-plugins-default: package version 1:0.9.7.2-0ubuntu1 dbgsym version 1:0.9.7.0+bzr3035-0ubuntu1 compiz version 1:0.9.7.0+bzr3035-0ubuntu1 required, but 1:0.9.7.2-0ubuntu1 is available libnux-2.0-common version 2.6.0-0ubuntu1 required, but 2.8.0-0ubuntu1 is available unity-common version 5.6.0-0ubuntu4 required, but 5.8.0-0ubuntu1 is available libcompizconfig0 version 0.9.7.0~bzr428-0ubuntu4 required, but 0.9.7.0~bzr428-0ubuntu6 is available outdated debug symbol package for libcompizconfig0: package version 0.9.7.0~bzr428-0ubuntu6 dbgsym version 0.9.7.0~bzr428-0ubuntu4 compiz-core version 1:0.9.7.0+bzr3035-0ubuntu1 required, but 1:0.9.7.2-0ubuntu1 is available outdated debug symbol package for compiz-core: package version 1:0.9.7.2-0ubuntu1 dbgsym version 1:0.9.7.0+bzr3035-0ubuntu1 nux-tools version 2.6.0-0ubuntu1 required, but 2.8.0-0ubuntu1 is available outdated debug symbol package for nux-tools: package version 2.8.0-0ubuntu1 dbgsym version 2.6.0-0ubuntu1 unity-services version 5.6.0-0ubuntu4 required, but 5.8.0-0ubuntu1 is available outdated debug symbol package for unity-services: package version 5.8.0-0ubuntu1 dbgsym version 5.6.0-0ubuntu4 libunity-core-5.0-5 version 5.6.0-0ubuntu4 required, but 5.8.0-0ubuntu1 is available outdated debug symbol package for libunity-core-5.0-5: package version 5.8.0-0ubuntu1 dbgsym version 5.6.0-0ubuntu4 libdee-1.0-4 version 1.0.6-0ubuntu1 required, but 1.0.8-0ubuntu1 is available unity version 5.6.0-0ubuntu4 required, but 5.8.0-0ubuntu1 is available outdated debug symbol package for unity: package version 5.8.0-0ubuntu1 dbgsym version 5.6.0-0ubuntu4 libnux-2.0-0 version 2.6.0-0ubuntu1 required, but 2.8.0-0ubuntu1 is available outdated debug symbol package for libnux-2.0-0: package version 2.8.0-0ubuntu1 dbgsym version 2.6.0-0ubuntu1 outdated debug symbol package for libgconf2-4: package version 3.2.5-0ubuntu1 dbgsym version 3.2.3-0ubuntu0.1 Please upgrade your system to the latest package versions. If you still encounter the crash, please file a new report. Thank you for your understanding, and sorry for the inconvenience!